Cord-holder for grain-binders.



PATENTED AUG. 25, 1903.

' v LA. JOHNSTON.

00m) HOLDER FOR GRAIN BINDERS.

APPLICATION FILED SEPT. 29. 1902.

e SHBETS-$HEET 1Q N0 MODEL.

. N0- 737,246. PATENTED AUG. 25,1903.

E. A. JOHNSTON.

CORD HOLDER FOR GRAIN BINDERS. 7 APPLICATION FILED SEPT. 29. 1902. I no MODEL. 6 SHEETS-SHEET 2.

No. 737,246. PATENTBD AUG. 25, 1903 B A. JOHNSTON. c0111) HOLDER FOR GRAIN BINDERS.

APPLIOATION ITILED SEPT. 29. 1902; r I

' I v 8 SHEETS-SHEET 8-- ]fIO MODEL.

'PATENTED AUG. 251903..

' NO'-?3T,24:63..

' E. A. JOHNSTON.

v 001m HOLDER FOR GRAIN .BINDERS mumonxou FILED SEPT. 29. 1902 no MODEL. 6 8HBBTSSHEBT 5.

PATEN'IBD AUG; 25, 1903.

' E A JOHNSTON 00m) HOLDER FOR GRAIN BINDERS.

APPLICATION FILED SEPT. 29. 1902.

6SKBETS-SHEET,6.

I no 11015311.

" UNITED STATE Patented Augus t25, 196%,

PATE T OFFICE. T

EDWARD A. JOHNSTON, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTER- -NATIONAL HARVESTER COMPANY, OF CHICAGO, ILLINOIS, A OOR- PORATION OF NEW JERSEY.

CORD-HOLDER FOR GRAIN-BIND RS;

SPECIFICATION forming part of Letters Patent No. 737,246, dated August 25, 1903. Application filed September 29, 1902. Serial No. 125,184. (No'modeL).

To all whom-it magnoncern: 7

Be it known that I, EDWARD A. JOHNSTON, a citizen-of the United States, residing atOhicago, county of Cook, State of Illinois, have invented certain new and useful Improvements in Cord-Holders for Grain-Binders;

and I do hereby declare the following to bea' full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the invention is to provide a holder which will yield upto the knotter a definite amount of cord or twine as required in the formation of the loopinstead of requiring the'knotter to pull out the twine through the holder,as is required in many knotters of the present day. H

Holders which yield up slack' to the knotters by moving bodily toward them at the proper time have "advantages over the kind where the slack is pulled through by the knotter. Principal amongthese are that while the band is always held tightly around the bundle, as usual, the adjustment of the holder-spring does not interfere in any way with the successful operation of the knotter and that cords of difierent sizes may be successfully held in the sameholder. These advantages are all inherent in the present invention, together with the additional advantage, among others, that'a single cam on the knotter-operating wheel serves to permit the holder to swing up "to the knotter and also operates the means by which the holder-disk is actuated. V

The invention is illustrated in the accompanying drawings, wherein- Figure 1 represents 'a front elevation of a knotter provided with a swinging cord-holder, showing the holder-strand held in the cordholder and the parts being in the position which they maintain during the formation of the bundle. Fig. 2 is a front elevation of the same parts shown in Fig.1, showing the neodle-strand carried forward, by the needle and laid into the cord-holder preparatory to being engaged by the disk and the forming of the knot. Fig. 3 is a front elevation of the'parts shown inFig. 6.

' shownin Fig. 2, showing the cord-holder swungup to the knotter-hook, thus yielding the required amount of twine to the knotterhook. Fig. 4 is a front elevation of the parts shown in Figs. 2 and 3 at the completion of the knot, showing the plunger of the cordholder moved down to its lowest position by means of the cam of the tier-wheel, which movement serves to turn the disk to engage the needle-strand,- at the same time severing the two strands to permit of the discharge of the bundle. mentary view Of the cord-holder, showing the cleaner, which is located between the two members of the cord-holding disk and held in position by means ofa stud which is secured to a portion of the cord-holder frame.

Fig. 6 ma side elevation of the cord-holder, showing the side farthest from the knotterhook. Fig. 7 is a side elevation of a cordholder, showing-the opposite side from that Fig. 8 is a plan view of the Fig. 5 is a fragcord-holder, showing the relative position of the trunnion on which it is pivoted and the antifriction-roller of the plunger. Fig. 9 is a sectional view taken on the line 9 9 of Fig. 6. Fig. 10 is a partial sectional view taken on a plane passing through the axis of the plunger and parallel to the axis of the trunnion, showing the plunger and the cord-holding disk in their normal position. Fig. 11 is the same as Fig. 10, showing the plunger moved to its lowest position, thereby turning the cord-holding disk to engage'the needlestrand and at the same time to sever the two cords to permit the-discharge of the bundle. Fig. 12 is a sectional view on the line 12 12 of Fig. 10. Fig. 13 is a sectional view on the line 13 13 of Fig. 10.

Referring first to Figs. 1, 2, 3, and 4, a denotes the knotter-frame, andb the hubof the same, which is journaled on the knotter-0perating shaft 0, which in turn is journaled in the overhanging tubular arm of the binderframe.

secured the knotter-operat-ingcam' and gearwheel d, which is provided with the customary-gear-segment e for driving the knotterpinion f and with a cam-groove g, which con- On the end of this shaft, as usual, is

stitutes one of the important features of the present invention and will be more fully described later on.

The construction of the knotterframe a presents no particular novelty, and the knotter itself k may be of the ordinary or any preferred type. As here shown, the knotter is of the kind that makes but one revolution to complete the knot and is left with its jaws pointing outward in the general direction of the outgoing bundle. The knotter-frame a is secured to the ordinary breastplate in any suitable manner, and the needle j is constructed and operated in the usual way.

The cord-holder is of the notched-disk type and comprises a bell-crank-shaped frame k, which is pivoted,by means of an integral trunnion Z at the end of its short arm m, to the knotter-frame a in a bearing n, that is located slightly below and inward from the knotteroperating shaft 0. The long arm of the cordholder frame has the holding-disk o, journaled on a transverse pin in an extension 19, projecting beyond the end of the arm at one side, as clearly shown in all the figures, and the disk is operated by a plunger q,that slides longitudinally in the holder-frame and has a roller 0" at its upper end, which projects laterally into the cam-groove g of the knotteroperating wheel. The long arm of the holderframe,which carries the plunger and holdingdisk, is bored out, as shown at s, to receive the plunger, and at its upper end the arm is also provided with a slot 15 opposite where the roller 1' on the plunger projects, and into the slot extends a pin it to guide the plunger in its movements and prevent it from turning in the bore of the holder-arm. The pin it is preferably the extended end of a threaded stud to, that is screwed into an interiorlythreaded socket at the upper end of the plunger and carries the roller 1' at its other end.

At its lower end the plunger carries a pawl 00, that is pivoted to it at y and projects beyond the end of the bore in the holder-frame and into operative proximity to the holderdisk, where it is provided with a shoulder a, which engages the notches of the disk on the forward throw of the plunger. Between the pivot y of the latch and the end of the plunger there is a spring a, that is seated in a hole in the plunger and presses on the heel of the pawl, so as to cause its front end to engage the notches of the disk when the plunger moves forward,but allows it to yield and the shoulder z to slip past the notches when the plunger returns.

The holder is of the twin-disk type-that is to say, it consists of two disks exactly alike, journaled on the same stud b, with a narrow intervening space between them. The stud is bolted into the extension 19 of the holderframe, so that the disk stands transversely to the plane in which the holder-frame swings, and the location of the extension 19 at one side of the holder-frame brings the edge of the disk to the center of the frame and into line with the movement of the plunger. At the opposite side of the holder-disk from the extension 19 there is secured to the holder-frame a knife or cordcutter c of the usual kind. The extension of the holder-frame is notched, as shown at d in Figs. 6 and 7, to receive the cord laid by the needle and prevent its accidental escape from the notches of the disk. The cutting edge of the knife is located at a point a little farther on in the rotation of the disk, as best shown in Fig. 7, so that the cords will not be out until the disk has secured a firm grip on them.

The cords are held in the notches of the holder-disk by means of a spring e, that is adjustably secured to the holder-frame by a tension screw f This spring is secured against one side of the holder-frame and has a flange 9', that is set edgewise on it and projects into the space between the two disks of the holder, so that the cords are'forced into the notches by the spring and securely held there by the pressure of the spring and the friction caused by the interlocking holdingsurfaces.

In order to strip the fag ends of the cord left in the holder by the knife, I provide a cleaner h, which consists of a metal plate of irregular shape that is secured to the outer end of a pin 1;, that is riveted or tapped into an extension j of the arm p of the holderframe. This extension is simply a continuation of the arm 19 past the holder-disk into such position that when the cleaner-plate h is secured to it it will projecttoward the axis of the disk, as best indicated in Figs. 5, 6, and 7, where it will be seen that the upper edge of the cleaner is inclined, so as to direct the cord toward and into the notch d of the holder-frame, and that its end or point ex tends into close proximity to and partlysurrounds the hub of the holder-disks, which hub is journaled on the stud b, on which the holder-disks revolve. the direction of rotation of the disk, and it will be understood from the above description, taken in connection with the illustration, that any fag ends or bits of cord that get caught in the disk will be pushed out and the disk stripped clean by the point Z (see Figs. 7 and 10) of the cleaner, which is preferably in actual contact with the hub bf of the disk and lies between the twin members thereof, as best shown in Fig. 5.

In Figs. 1 to 4,771. denotes a set-screw which is tapped into the knotter-frame in a position to be struck by the holder-frame when it swings inwardly toward the knotter. This screw is adjustable in a way thatwill be readily understood and forms an adjustable stop to limit the inward movement of the holder and the amount of slack twine given up to the knotter.

The construction of my improved cordholder being as above described, the general operation needs but little further explanation.

On reference to Figs. 1 to 4 it will be seen The arrow indicates that the cam-groove g is concentric with the axis of the wheel cl for about half its circumference. The wheel revolves in the direction of the arrow, and the part of the cam having the greatest eccentricity is opposite the gearsegment by means of which the knotter is operated. The active part of the cam begins at the point n, which is so located with respect to the gear-segment? that it begins to ing a bell-crank-shaped frame 76 having two act on the roller 7' shortly after the beginning of the knotters rotation. The first action of the cam-grooveg is to permit the holder-frame to swing toward the knotter in response to the strain on the cord until it brings up against the stop m. This occurs just about the time when the loop is completely formed on the knotter-jaws, as shown in Fig. 3, and the further rotation of the cam-groove then forces down the roller r and projects the plunger q, so as to cause the latch to give the disk a partial rotation. This movement of the disk grips the needle-strand of the cord, (which has been laid in the notch d by the advance of the needle, as indicated in Figs. 2 and 3,) and before the rotation entirely ceases both strands have been carried against the knife 0 by the movement of the disk and the cords have been severed, leaving a short piece or fag end 0, Fig. 5, in the holder-disk. The continued rotation of the cam-groove then retracts the plunger and pushes the holderframe outward again until the fiat top p contacts with the overhanging edge q of the knotter-frame, when the parts are all restored to theirinitial position, when the whole knotting mechanism comes momentarily at rest, awaiting the formation of the next bundle.

Having thus described my invention, what I claim, and desire to secure by Letters Pat-.

out, is v 1. In a knotter mechanism for grain-binders, the combination with the knotter-frame and knotter-operating wheel, of a swinging cord-holder frame pivoted to the knotterframe, a holder-disk carried by the swinging.

frame, a plunger for operating the disk also wholly carried by the swinging frame, and a single cam on the knotter-operating wheel for controlling the holder-frame and operating the disk-plunger.

2. In a knotter mechanism for grain-binders, the combination with the knotter-frame and knotter-operating wheel, of a swinging cord-holder frame pivoted to the knotterframe and having a holder-disk at its lower end, a sliding plunger in the frame for operating the disk having a roller projecting laterally from its upper end, and a cam on the knotter-operating wheel which engages the roller, first causing the holder-frame to swing inwardly, and subsequently operating the plunger to rotate the holder-disk.

3. In a knotter mechanism for grain-binders, the combination with the knotter-frame and knotter-operating wheel having a cam-. groove in its side face, of a cord-holder comprising a bell-crank-shaped frame pivoted by one of its arms to the knotter-frame, a holdersliding longitudinally in said disk-carrying arm and having aroller projecting laterally 1' into the said groove of the knotter-operating wheelfrom the frame at the angle between the arms.

4. A cord-holder for grain-binders,comprisarms, a pivot for the frame at the end ofone arm,- a holder-disk jou rnaled at the lower end of the other arm, adisk-operating plunger q sliding in the holder-carrying arm, and an operating-roller r projecting laterally beyond the frame from the upper end of the plunger.

5. A cord-holder for grain-binders comprising a swinging frame, a holder-disk j ournaled at the lower end of the frame, a disk-operating plunger sliding in the frame, and a yielding pawl carried by the lower end of the plunger and engaging the disk.

6. A cord-holder for grain-binders comprising a swinging frame, a holder-disk j ournaled at the lower end of the frame, a disk-operating plunger q sliding in the frame, a pawl 00 pivoted at the lower end of the plunger and engaging the disk, and a spring a reacting between the plunger and the pawl and operating to hold the pawl up to the disk on the forward stroke of the plunger and allow it to yield and pass the disk on the plungers return stroke.

7. A cord-holder for grain-binders comprising a swinging frame, a holder-disk j ournaled at the lower end of the frame, and a diskoperating plunger q sliding in the frame, and having a yielding pawl at one end for operating the disk, a roller 1 projecting laterally from the upper end of the plunger by which it is operated, a pin a projecting from the same end of the plunger, and a guide-slot 25in the holder-frame in which the pin slides.

8. Acord-holder forgrain-binders comprising a frame It, having an arm 11 projecting from its lower end at one side, a holder-disk journaled in said arm, and a plate-like cleaner h for the disk, secured to an extension j of the arm and its end projecting in the opposite direction to the rotation of the disk into close proximity to the disks axis so as to strip the fag ends of the cord as the disk revolves.

9. A cord-holder for grain-binders comprising a frame 70, having an arm 19 projecting from its lower end at one side and having a cord-receiving notch at d, a holder-disk journaled on a pin set transversely in the arm, a knife 0 secured to the opposite side ofthe frame from the arm and bearing against the disk, a spring 6' secured to the frame and cooperating with the disk to hold the cord, and a plate h secured to the extension 7" of the armp of the frame and projecting into close proximity to the axis of the disk so as to act as a cleaner and strip the fag ends of the cord from the disk.

10. A cord-holderfor grain-binders comprising a pair of notched disks, an arm p of the holder-frame in which the disks are journaled, a cooperating spring 2 secured to the holderframe and having a plate g projecting edgewise between the disks, a knife a secured to the holder-fra1ne and bearing against the outer side of the disk farthest from the arm 19, and a plate h secured to the extension j of the arm 19 and projecting into close proximity to the axis of the disks on the outer side of the disk nearest the arm so as to strip the fag ends of the cord as the disk revolves.

11. Acord-holderforgrain-binders comprising a. notched disk journaled in one end of the holder-frame, a plunger gslidingin the frame, a pawl 00 pivoted at the end of the plunger, and having a shoulder at its end to engage the notches of the disk, and a spring a react ing between the plunger and the pawl to cause the shoulder to engage the notches of the disk on the forward stroke of the plunger and permit it to yield and pass the notches on the return stroke of said plunger.

12. In a knotting mechanism for grainbinders, the combination with the knotterframe, of a swinging cord-holder, and an adjustable stop for limiting the inward swing of the holder toward the knotter.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWARD A. JOHNSTON.

Witnesses:

CHAS. N. CHAMBERS, W. M. TWoMBLY. 

